it would be C the yolk because
I think one must rotate the pt into a supine position and protect her spine.
Supine position means lying horizontally with the face and torso facing up, as opposed to the prone position, in which is face down. When used in surgical procedures, it allows access to the peritoneal, thoracic and pericardial regions; as well as the head, neck and extremities.
Natural selection is when certain environmental qualities cause a species to evolve in order to survive in the environment. Natural selection is a specific part of that, when some of the variations of the species die off because they can't survive, then the ones who survive live to create more living babies with the qualities that allow them to survive in the environment.